Improvement in heel-calks



iuteti tetre A' me (erp-w;

MARTIN F. 'WALTER AND CHARLES STAUDINGER, or HARTFORD; e0N

' .NEcTIcUfr Letters Patent No. 107,132, dated September 6, 18.70.

-nvrPRovEMENT I'N HEEL-CALM.

The Schedule referred to in' these Letters Patent and making part of the same.

We, MARTIN F. WALTER and CHARLES STAUD- INGER, of Hartford, in 'the county of' Hartford and State of Connecticut, have invented certain Improvements in Heel-Gaiks, of which the following is a spec,- i fication.

Nature mul O ly'ccs of the I nccntion..

This calk is designed to be worn on the heel of a shoe or boot, to prevent the wearer from slipping on an icy walk, and has a part attached to -it with sharp points upon its under side, which part can be swung -out from under 'the foot when the wearer does not wish to make use of' the article as a calk.

Description of Athe Accompanying Droit-ing.

Figure 1 is a side view, with the swinging part adjusted as when not in use.

Figure 2 is a side View of the calk adj usted for use.

- Figure 3 is a plan view of the calk in the position,

shown in fig. 1. v

General Description. The let-ter a indicates one part ofthe calk rnadeof a plate of metal. This part isv secured to the leatherv heel of a'boot or shoe by screws running through the holes b b, or in any other convenient manner.

At the back'part of the plate a is a'projection, c, which rises upward and backward. lo its extremity is hinged the plate d, which has sharp points d1 upon that surface which is the under surface, when this plate isfoldcd under the heel for use, as shown in Iig. 2, which sharp points take hold -of the icy walk, and prevent the wearer fromslipping.

ncction with the in the upper side of the plate a, and fastened to this plate at the end c. 'The loose end of the spring bears against the hinge part of the plated, insuch fashion as to hold the plated firmly against the plate a, when the plates occupy the position shown in tig. 2.

The hinge part of the plate al is made somewhat cam-shaped, to assist this oiiice, ot` the spring. The spring also holds the plate (l in position when opened ont, as shownin figs. 1 and 3. i l l Upon that side of the pla-te d opposite from that which Vbears, the. sharp pointsd, is a short spur, d'2, which, when-the plate is folded under the heel, shuts intothe orice e', and thus prevents the plate l from slipping sidewise upon the plate a.

The advantages of this c alk are. obvious. When it is desired to make use of the article as' a calk, it is folded down, as shown in fig. 2; and when the wearer enters a house or other place where itwould be undesirable to have the sharpy points under the foot, it is only necessary to fold the plate (l back, as shown in figs. 1 and 3.

Claim. We claim as our inventionlhe part d, with its pin (l2, when employed 1n conpart e,--having its orifice e2, as d'e- MARTIN ll. WALTER.;4 cH. STAUDINGER.

scribed.

'Witnessesz WM. E. SIMONDS, THEO. G. Ennis. 

